通过实验畸形学的研究,证实投予过多的维生素A 可产生小鼠耳畸形和听器异常。为了正确掌握畸形的病态,进一步了解中耳内耳的正常发生是必要的。在临床上畸形耳手术的关键是对面神经异常走行的了解,为了解病态情况,对面神经正常发生和周围组织的形态学发 Through experimental deformity studies, confirmed that excessive administration of vitamin A can produce mouse ear malformations and hearing aids. In order to correctly grasp the deformity of the pathology, to further understand the normal occurrence of the middle ear is necessary. In clinical deformity of the ear surgery is the key to the understanding of the anomalous facial nerve walking, in order to understand the pathological conditions, the normal facial nerve and the surrounding tissue morphology